Enhancing the knowledge of the deep reservoirs structuring in the Takelsa basin (Northeastern Tunisia) using an integrated geophysical approach

Ghouili, Nesrine; Horriche, Faten Jarraya; Khazri, Dhekra; Benabdallah, Sihem; Gabtni, Hakim

doi:10.1007/s12517-022-09430-7

Cited by 4 publications

(1 citation statement)

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“…The data processing method of TDEM is usually to convert the induced electromotive force into the early, late, or whole period apparent resistivity [19,[23][24][25][26] and then use the apparent resistivity for inversion. For example, one-dimensional semiquantitative inversion methods like "floating thin plate interpretation method" and "smoke loop" interpretation method based on the horizontal-layered medium model are introduced, which have the characteristics of fast inversion without the initial model.…”

Section: Tdem Inversion Methodmentioning

confidence: 99%

Fine Detection and Analysis of Hidden Karst in Wellsite with Quasi-Three-Dimensional TDEM Based on Lateral Constraint

Wu,

Liao,

Chen

et al. 2023

Geofluids

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Considering that karst caves, underground rivers, and dissolution fractures in shallow carbonate formation in the Sichuan Basin are extremely developed, leakage, failure and plugging difficulties are easy to occur in the drilling process. The TDEM was used to carry out the exploration of hidden karst geological bodies in well QM2, and the quasi-three-dimensional inversion based on lateral constrain was used to invert the TDEM data. Three NW trending anomalous bands were identified in the lower Triassic Jialingjiang Formation within the range of drilling, consisting of seven relatively low-resistivity anomalous zones. Under the guidance of TDEM quasi-three-dimensional inversion resistivity data, the low-resistivity karst development area is avoided, and the specific drilling location of well QM2 is determined. No karst cave and underground river were drilled in the later drilling process of well QM2, as well as no instability phenomenon occurred. It indicates that the TDEM detection results are consistent with the actual drilling, and the quasi-three-dimensional TDEM inversion interpretation data based on lateral constraints is reliable and can accurately detect the buried karst in the wellsite.

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